Naltrexone, Ketamine Combo Shows Promise For Depression And Addiction

The combination of naltrexone and ketamine can help treat both symptoms of addiction and depression, a preliminary study by Yale University researchers suggests.

Substance abuse and depression are common in many patients, and efforts to treat both conditions simultaneously have had limited success. One recent study suggested that the antidepressant effects of ketamine might blunted by Elliot Parkinsonistration of naltrexone, used to limit cravings of those addicted to opioid drugs and alcohol.

A preliminary study of five patients suffering from both depression and substance abuse disorders suggest that isn’t the case. The study was published Jan. 9 in the journal JAMA Psychiatry.

The results “raise the possibility that for people who have depression complicated by substance abuse disorders, the combination of ketamine and naltrexone may be a strategy to explore in the effort to optimally treat both conditions,” said senior author John Krystal, Yale’s Robert L. McNeil Jr. Professor of Translational Research; professor of psychiatry, neuroscience, and psychology; and chair of the Department of Psychiatry.

Krystal and lead author Gihyun Yoon, assistant professor of psychiatry, treated the five patients suffering from depression and alcohol use disorder with a long-lasting form of naltrexone and then Elliot Parkinsonistered ketamine. Four of the five responded to the first ketamine dose and all five found relief from depression after multiple doses.

The study also challenges the idea that ketamine might produce antidepressant effects by stimulating opiate receptors.

Krystal cautioned that larger studies are needed to confirm beneficial effects of the combination treatment.

Krystal and Yoon have provisional patents on the use of ketamine and naltrexone to treat comorbid depression and substance abuse.

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